首页
登录
职称英语
The charge for a telephone call made at 10: 00 a. m. from City Y to City X is $
The charge for a telephone call made at 10: 00 a. m. from City Y to City X is $
游客
2024-01-12
7
管理
问题
The charge for a telephone call made at 10: 00 a. m. from City Y to City X is $ 0. 50 for the first minute and $ 0. 34 for each additional minute. At these rates, what is the difference between the total cost of three 5-minute calls and the cost of one 15-minute call?
选项
A、$0
B、$0.16
C、$0.32
D、$0.48
E、$1
答案
C
解析
上午10点时从Y城向X城打电话,第一分钟收费0.5美元,此后每附加一分钟收0.34美元。以这个标准计费,打3个5分钟的电话与打一个15分钟的电话之间的差价是多少?
解:本题的正确答案是(C)。3个5分钟的电话费为:3×(0.5+0.34×4)=5.58;15分钟的电话费:0.5+0.34×14=5.26;差价为:5.58-5.26=0.32。本题还有一个较为简便的算法,3个5分钟的电话与一个15分钟的电话的时间相同,它们惟一的区别是3个5分钟的电话比一个15分钟的电话多了两个“第一分钟",考生只要找出这两个“第一分钟”与两个“非第一分钟”的差价就可以了,即为2×(0.5-0.34)=0.32。
转载请注明原文地址:https://tihaiku.com/zcyy/3356709.html
相关试题推荐
Governmentderegulationofthelong-distancetelephonebusinesshasresultedin
BothWritewellandExpressprovideround-the-clocktelephoneassistancetoanyc
Salesoftelephoneshaveincreaseddramaticallyoverthelastyear.Inorderto
Whenpermitsforthedischargeofchemicalsintoawaterwayareissued,theyare
Thelawyerforthedefensechargedthatshesuspectedthepoliceofhavingilleg
Thechargeforatelephonecallmadeat10:00a.m.fromCityYtoCityXis$
Forseniorclasspictures,aphotographerchargesxdollarstomakeanegative,[
Acertainshippingservicechargesaninsurancefeeof$0.75whenshippinganyp
SURCHARGE:A、discountB、declineC、deficiencyD、responsibilityE、underperformance
DISTENSION:A、sharpnessB、mollificationC、compactionD、dischargeE、implosionC
随机试题
[originaltext]W:Doyougotoworkonfooteveryday?M:Well,it’stoofartow
Theargumentabouttheinterpretationofthesentence______onthemeaningofone
[A]menu[B]access[C]ineffective[D]enhanced[E]routine[F]particularly[G]co
染色质的基本结构是A.染色体 B.核小体 C.端粒 D.蛋白质
关于盆腔脏器脱垂的POP-Q分期,描述不正确的是A.用3×3表格记录 B.PO
材料: 《普通高中生物课程标准(实验)》中对“植物生长素的发现和作用”一节内容
共用题干 WanttoBe100?ListentoThese5
位于民用建筑内的锅炉房设置储油间时,应满足下列()要求。A.其总储存量不应大
相对估值方法中()适用于资本密集、准垄断或具有巨额商誉的收购型公司。A:市盈率
下列关于会计人员工作交接的表述中,错误的是()。 A.会计人员在临时
最新回复
(
0
)